My research interest is related to the generalization of the coupled cluster
method to the multi-reference case. Since the invention of the coupled-cluster
method there have been many attempts to set up a
multi-reference coupled cluster (MRCC). However, none of these approaches
is fully satisfactory. Currently, there is no bona fide
multi-reference coupled cluster (MRCC) available but the need for it does
still exist as there are many applications which rely on a
multi-reference description of the wave function (excited states,
dissociation problems, transition states, radicals, low spin systems).